Test/review of Panasonic 9V ProPower

Batteries and Chargers Consumable Batteries
1

Panasonic 9V ProPower







Official specifications:

  • Nominal voltage: 9V

  • Chemistry: Alkaline




A regular 9V alkaline battery.















As usual with alkaline batteries the capacity varies with load, here anything above 0.01A will reduce the capacity.
I wonder why the 0.001A track shows less capacity, first guess was numeric error (I add about 2 millions entries), but multiplying number of samples with 1mA and dividing with 3600 to get Ah gives about 574.538mA and my sum is 574.536mA, i.e. no math errors.





This test did take a lot of time due to the 0.001A trace and I will probably not do that in the future.





Conclusion

A fairly standard alkaline 9V battery, this can be used as a reference when I publish some other 9V battery tests.



Notes and links

How is the test done and how to read the charts
2

I have been asked a few times about doing 9V tests. I did start on it about a year ago and have been using a lot of testing time, especially because I wanted to test at realistic low currents.
I also wanted to have a couple of test to compare before I published anything.

It is possible to post review requests in this thread: Review request for HKJ [Rechargeable Batteries] but do not expect a review a few weeks later (A few months is more realistic).

3

575 hour test! Now that’s dedication!
Thank you for the test, I’ve often wondered about 9v batteries. Used to have flashlights that used 9v batteries as a kid. Now I understand why they lasted so long. Granted the beam was almost firefly level.

4

Anyone have a pointer to a good US source of bulk (dozen) 9v batteries?
EDIT, I found a dozen for $20 at Walmart